There's a possible match for the marriage on the BMD Index
Name: Annie M Stevenson
Registration District: Ballymoney
Event Type: Marriage
Quarter and Year: Apr - Jun 1900
volume Number: 1 / page : 153
Name: James Taylor
[same index details]
The townland of Castleroe seems to be in the registration district of Coleraine, but the town, and district, of Ballymoney are only short distance to the south-east.
Shane